Powerball Clustering Distribution

  Number Frequency   Power Ball Frequency   Overdue Numbers   Odd/Even Numbers   High/Low Numbers   Sum and Root Sum   Hot and Cold Numbers   Most Common Pairs   Most Common Triplets   Most Common Quadruplets   Mean, STDEV, and Range Trend   Mean Distribution   Range Distribution   STDDEV Distribtion   IQR Distribution   Clustering Distribution
Charts
 Latest Draw Result
  Number Frequency   Power Ball Frequency   Overdue Numbers   Odd/Even Numbers   High/Low Numbers   Sum and Root Sum   Hot and Cold Numbers   Most Common Pairs   Most Common Triplets   Most Common Quadruplets   Mean, STDEV, and Range Trend   Mean Distribution   Range Distribution   STDDEV Distribtion   IQR Distribution   Clustering Distribution

This page explores how often drawn numbers appear close together or in consecutive sequences. It helps us see whether number grouping occurs as expected in a random lottery environment.

Reset

Related Lotto Clustering Distribution

Powerball Charts

 
Last 75 draws
From May. 14, 2025 To Nov. 5, 2025

Histogram of Number Clustering

The histogram of number clustering measures the typical spacing between consecutive numbers in lotto draws. Each bin represents a range of average gaps, showing whether numbers tend to cluster closely together or spread evenly across the draw. This histogram helps analysts detect patterns in number spacing, complementing other perspectives such as sums and ranges.

The histogram of average gaps between consecutive numbers in lotto draws reveals that the most frequent gap interval is 13-14 with 14 occurrences, suggesting a strong clustering in this interval. In contrast, the least frequent gap interval is 1-2 with 0 occurrences, showing it is rarely observed. This indicates a noticeable concentration of draws around certain gap intervals. Overall, the distribution shows clustering around specific gap intervals, indicating that draws tend to gravitate toward these values.

Format Changes in US Powerball Lottery

Since its inception on April 22, 1992, the U.S. Powerball has undergone several significant changes in format and structure. At launch, Powerball became the first lottery game to use a dual-drum format—drawing five white balls from one set and one red Powerball from another—designed to create more prize tiers. Initially, players selected 5 numbers from 45 white balls and 1 from 45 Powerballs.

In November 1997, the format changed to 5/49 + 1/42. This was followed by another change in October 2002, expanding the white ball pool to 53 while keeping the Powerball at 42. By August 2005, the white balls increased again to 55. A major change occurred in January 2009, with the matrix becoming 5/59 + 1/39. Around this time, Florida joined the game, and the drawings were moved there.

One of the most notable changes came in January 2012 when the Powerball pool was reduced to 35, while the white balls remained at 59. Another significant format change was introduced in October 2015, adjusting the matrix to 5/69 + 1/26. This increased the odds of winning smaller prizes while making the jackpot harder to win, with overall odds shifting to approximately 1 in 292 million.

Period Format Powerball
April 1992 5 of 45 1 of 45
November 1997 5 of 49 1 of 42
October 2002 5 of 53 1 of 42
August 2005 5 of 55 1 of 42
January 2009 5 of 59 1 of 39
January 2012 5 of 59 1 of 35
October 2015 5 of 69 1 of 26

How US Powerball Lotto Format Changes Affect Your Number Strategy.

These format changes have a direct impact on statistical analysis. Mixing frequency data across different formats is not advisable because each version of the game has a different number pool and probability structure.

For example, a number that appeared frequently in the 5/49 format may have done so due to higher individual draw probability, but that same frequency can be misleading in the 5/69 formats.

Therefore, for meaningful analysis, it’s essential to treat each format as its own distinct dataset. Analyzing trends or frequencies should be restricted to results from within the same format period, especially if the goal is to inform number selection in the current game structure.

Powerball Charts